Qualify shell palette references for Qt 6.12 (#14553)

shell/Ui/ToggleSwitch.qml

@@ -1,5 +1,6 @@
 import QtQuick
 import qs.Commons
+import qs.Commons as Commons
 
 // Bare on/off switch: a track with a sliding knob and no label. This is the
 // switch `Toggle` parks at the end of its labeled row, factored out so panel
@@ -40,8 +41,8 @@ Item {
   property bool cursorRing: interactive
   property int cursorPad: Style.space(6)
   property bool rounded: Style.cornerRadius > 0
-  property color foreground: Color.foreground
-  property color accent: Color.accent
+  property color foreground: Commons.Color.foreground
+  property color accent: Commons.Color.accent
 
   signal toggled()
   signal hovered(bool isHovered)